fix newline character

Author: craigshoemaker

articles/container-apps/github-actions-cli.md

@@ -46,7 +46,7 @@ az ad sp create-for-rbac \
 az ad sp create-for-rbac `
   --name <SERVICE_PRINCIPAL_NAME> `
   --role "contributor" `
-  --scopes "/subscriptions/<SUBSCRIPTION_ID>/resourceGroups/<RESOURCE_GROUP_NAME>" \
+  --scopes "/subscriptions/<SUBSCRIPTION_ID>/resourceGroups/<RESOURCE_GROUP_NAME>" `
   --sdk-auth
 ```